An inductive power transfer system is arranged to transfer power from a power transmitter to a power receiver via a wireless power signal. The system supports communication from the power transmitter to the power receiver based on load modulation of the power signal. The power receiver transmitting a first message to the power transmitter which comprises a standby power signal requirement for the power signal during a standby phase. The power transmitter receives the message, and when the system enters the standby phase, the power transmitter provides the power signal in accordance with the standby power signal requirement during. A power receiver configurable standby phase is provided which may for example allow devices to maintain battery charge or to provide fast initialization of the power transfer phase.
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2. The method of claim 1, wherein the standby power signal requirement is indicative of a power requirement of the power signal during the standby phase.
A system and method for managing power signals in electronic devices, particularly during standby phases, addresses inefficiencies in power consumption. The invention monitors and adjusts power signals to meet specific requirements during standby, ensuring optimal energy use without compromising device functionality. The method involves detecting a standby phase, analyzing the power signal to determine its requirements, and dynamically adjusting the signal to match those requirements. This ensures that the device operates within safe and efficient power parameters while in standby mode. The standby power signal requirement is defined as the specific power level or characteristics needed to sustain the device's standby functions, such as maintaining minimal operational states or readiness for quick activation. By dynamically adjusting the power signal to meet these requirements, the system prevents unnecessary power drain while ensuring the device remains responsive. This approach is particularly useful in battery-powered or energy-sensitive applications where minimizing standby power consumption is critical. The method may also include feedback mechanisms to continuously monitor and refine the power adjustments based on real-time conditions. The invention improves energy efficiency, extends battery life, and reduces overall power waste in electronic devices.
3. The method of claim 2, wherein the standby power signal requirement represents a minimum power for a reduced functionality of the power receiver.
A method for managing power delivery in a wireless power transfer system addresses the challenge of optimizing energy efficiency while maintaining essential functionality in power receivers. The system includes a power transmitter and one or more power receivers, where the power transmitter generates a wireless power signal to charge or power the receivers. The method involves determining a standby power signal requirement for each power receiver, which represents the minimum power needed to sustain reduced functionality, such as maintaining basic operational states or low-power modes. The power transmitter then adjusts the wireless power signal based on these requirements, ensuring that each receiver receives only the necessary power to avoid unnecessary energy consumption. This approach enhances overall system efficiency by dynamically adapting power delivery to the actual needs of the receivers, particularly in scenarios where full power is not required. The method may also involve monitoring the power receivers to detect changes in their operational states and updating the standby power signal requirements accordingly. By prioritizing reduced functionality over full operation, the system conserves energy while ensuring critical features remain active. This technique is particularly useful in environments with multiple power receivers, where efficient power distribution is essential.
4. The method of claim 3, wherein the reduced functionality of the power receiver comprises functionality for initializing a wake-up process for the power receiver.
A system and method for managing power receiver functionality in wireless power transfer involves selectively reducing the operational capabilities of a power receiver to conserve energy. The power receiver is part of a wireless power transfer system where a power transmitter supplies energy to one or more power receivers. The system detects a condition, such as low battery or inactivity, and reduces the functionality of the power receiver to minimize power consumption. This reduction includes disabling certain features while retaining essential operations, such as initializing a wake-up process to restore full functionality when needed. The wake-up process allows the power receiver to transition from a low-power state back to normal operation, ensuring efficient energy use without compromising usability. The method ensures that the power receiver remains responsive to user needs while conserving energy during periods of reduced demand. This approach is particularly useful in portable devices where power efficiency is critical.
5. The method of claim 3, wherein the power requirement indicates a minimum power for maintaining an energy storage requirement for the power receiver during the standby phase.
This invention relates to power management systems for wireless power transfer, specifically addressing the challenge of maintaining reliable energy storage in power receivers during standby phases. The system dynamically adjusts power transmission based on the receiver's power requirements to ensure sufficient energy storage without excessive power consumption. The method involves monitoring the power receiver's state, including its energy storage levels, and determining a minimum power threshold needed to sustain the receiver's standby operations. Power transmission is then regulated to meet this threshold, preventing energy depletion while optimizing efficiency. The system may also incorporate feedback mechanisms to adapt to changing conditions, such as variations in receiver demand or environmental factors. By dynamically adjusting power delivery, the invention ensures continuous operation of the receiver during standby, reducing the risk of power loss and improving overall system reliability. The approach is particularly useful in applications where uninterrupted power supply is critical, such as medical devices, industrial sensors, or IoT systems. The invention enhances energy efficiency by avoiding over-provisioning of power while guaranteeing the receiver's operational stability.
8. The method of claim 7, wherein the wake-up message is transmitted from the power receiver by load modulation of the power signal during the standby phase.
This invention relates to wireless power transfer systems, specifically methods for efficiently waking up a power receiver from a standby phase. The problem addressed is the need for a low-power, reliable way to activate a power receiver when it is in a low-power standby state, without requiring additional communication channels or excessive energy consumption. The method involves transmitting a wake-up message from the power receiver to a power transmitter during the standby phase. This wake-up message is sent by modulating the load impedance of the power receiver, which in turn modulates the power signal being received. The power transmitter detects this modulation and interprets it as a wake-up command, initiating the power transfer process. This approach eliminates the need for separate communication hardware, reducing complexity and cost while maintaining energy efficiency. The load modulation technique ensures that the wake-up signal is transmitted using minimal power, making it suitable for battery-powered or energy-harvesting devices. The system operates in a standby phase where the power receiver is in a low-power state, conserving energy until an active power transfer is required. The modulation of the power signal provides a direct and reliable way to signal the transmitter to resume power delivery. This method is particularly useful in applications where devices need to remain in a low-power state for extended periods but must be quickly and efficiently activated when needed.
9. The method of claim 1, wherein the power receiver is configured to transmit the first message during the power transfer phase.
A wireless power transfer system includes a power transmitter and a power receiver that communicate during power transfer to optimize efficiency and performance. The power receiver is configured to transmit a first message to the power transmitter during the power transfer phase, allowing real-time adjustments to power delivery. This communication enables dynamic control of power levels, frequency adjustments, or alignment corrections based on the receiver's status, such as load conditions or positioning. The system may also include a power transmitter that initiates power transfer upon detecting the presence of a compatible receiver, ensuring efficient energy delivery while minimizing interference or wasted power. The power receiver may further include a communication module that transmits status updates or performance metrics to the receiver, allowing the transmitter to adapt its output accordingly. This bidirectional communication during power transfer improves reliability and efficiency in wireless charging applications, particularly in environments where conditions may vary, such as in automotive, consumer electronics, or industrial settings. The system may also incorporate error detection and correction mechanisms to ensure robust communication between the transmitter and receiver.
10. The method of claim 1, wherein the power transmitter is configured to enter the standby phase in response to receiving an end of power transfer phase message.
A wireless power transmission system includes a power transmitter and a power receiver for transferring power between them. The system monitors the power transfer process to ensure efficient and safe operation. During power transfer, the system detects when the transfer should conclude, such as when the receiver is fully charged or when the transfer is interrupted. Upon detecting the end of the power transfer phase, the power transmitter transitions to a standby phase to conserve energy and prepare for future transfers. The standby phase reduces power consumption while maintaining readiness to resume power transfer when needed. The system may also include safety mechanisms to prevent overheating or other hazards during operation. The power transmitter and receiver communicate wirelessly to coordinate the transfer process, ensuring synchronization and efficiency. The standby phase helps extend the lifespan of the power transmitter by minimizing unnecessary power usage when no active transfer is occurring. This method improves energy efficiency and reliability in wireless power systems.
11. The method of claim 1, wherein the power receiver charges an internal energy store from the power signal during the standby phase.
A method for wireless power transfer involves a power transmitter and a power receiver, where the power receiver operates in an active phase and a standby phase. During the active phase, the power receiver receives a power signal from the power transmitter to power a load. In the standby phase, the power receiver continues to receive the power signal but does not power the load. The power receiver includes a power management circuit that detects the standby phase and adjusts the power signal to reduce power consumption. The power receiver also includes a communication circuit that transmits a standby signal to the power transmitter to indicate the standby phase. The power transmitter adjusts the power signal based on the standby signal to reduce power transmission. The power receiver further includes an internal energy store, such as a battery or capacitor, which is charged from the power signal during the standby phase. This allows the power receiver to store energy for future use when the load is active, improving efficiency and reducing power waste. The method ensures that power is conserved during standby while maintaining the ability to quickly resume full operation when needed.
12. The method of claim 1, wherein the power transmitter and the power receiver switch from the standby phase to the power transfer phase without entering a configuration phase.
Wireless power transfer systems enable devices to charge without physical connections, but existing systems often require a configuration phase to establish communication and alignment between the transmitter and receiver before power transfer begins. This phase can introduce delays and inefficiencies, particularly in applications where rapid power delivery is critical. A wireless power transfer system includes a power transmitter and a power receiver that communicate to initiate and manage power transfer. The system operates in multiple phases, including a standby phase where the transmitter and receiver are idle or in a low-power state, and a power transfer phase where energy is actively transmitted. Traditionally, a configuration phase is required between these phases to establish parameters such as alignment, power levels, and communication protocols. This configuration phase can slow down the overall power transfer process, especially in dynamic environments where alignment or conditions may change frequently. The invention eliminates the need for a configuration phase by enabling the power transmitter and receiver to transition directly from the standby phase to the power transfer phase. This is achieved through preconfigured settings or adaptive algorithms that allow the system to initiate power transfer without additional setup steps. The transmitter and receiver may use stored parameters, predictive alignment techniques, or real-time feedback to ensure efficient power transfer without the delay of a separate configuration phase. This approach reduces latency and improves responsiveness, making it suitable for applications requiring rapid power delivery, such as electric vehicle charging or portable device charging in high-demand scenarios.
15. The method of claim 14, wherein the second message indicates a phase the power transmitter should enter after a wake-up from the standby phase.
A system for managing power transmission in wireless charging involves a power transmitter and a receiver device. The power transmitter operates in different phases, including an active phase for transmitting power and a standby phase for conserving energy. The receiver device sends a first message to the power transmitter to transition from the standby phase to the active phase. The power transmitter then sends a second message to the receiver device, specifying the phase the transmitter should enter after waking up from standby. This ensures efficient power transfer by coordinating the operational states of both devices. The system may also include additional features such as authentication, power transfer control, and error handling to enhance reliability and security. The method ensures that the power transmitter and receiver are synchronized in their operational phases, optimizing energy efficiency and performance during wireless charging.
17. The method of claim 16, wherein the standby power signal requirement is indicative of a power requirement of the power signal during the standby phase.
A method for managing power signals in electronic devices, particularly during standby phases, addresses the challenge of optimizing energy consumption while maintaining device functionality. The method involves monitoring and adjusting power signals to meet specific requirements during standby operation, ensuring efficient power usage without compromising performance. A key aspect is determining the standby power signal requirement, which reflects the necessary power level for the device to remain in a standby state. This requirement is dynamically assessed based on factors such as device components, operational conditions, and power supply capabilities. The method ensures that the power signal delivered to the device aligns with this requirement, preventing excessive power draw or insufficient supply. By dynamically adjusting the power signal, the method enhances energy efficiency, extends battery life, and reduces unnecessary power consumption. The approach is applicable to various electronic devices, including consumer electronics, industrial equipment, and communication devices, where standby power management is critical. The method may also integrate with other power management techniques, such as sleep modes or adaptive power scaling, to further optimize energy usage.
18. The method of claim 16, wherein the standby power signal requirement represents a minimum power for a reduced functionality of the power receiver.
A method for managing power delivery in a wireless power system addresses the challenge of efficiently providing standby power to a power receiver while minimizing energy waste. The system includes a power transmitter and a power receiver, where the power transmitter generates a wireless power signal to charge or power the receiver. The method involves determining a standby power signal requirement for the receiver, which represents the minimum power needed to maintain reduced functionality, such as basic operations or low-power modes. The power transmitter then adjusts the power signal based on this requirement, ensuring the receiver receives only the necessary power to sustain essential functions without unnecessary energy consumption. This approach optimizes energy efficiency by avoiding overcharging or excessive power delivery during standby states. The method may also involve monitoring the receiver's power state to dynamically adjust the power signal as needed, ensuring continuous adaptation to changing power demands. By focusing on reduced functionality during standby, the system conserves energy while maintaining operational readiness.
20. The method of claim 16, wherein the power transmitter transitions to the power transfer phase in response to receiving a wake-up message from the power receiver during the standby phase.
Wireless power transfer systems enable devices to receive power without physical connections, but existing systems often struggle with efficient power delivery and synchronization between transmitters and receivers. This invention addresses these issues by improving the transition between standby and active power transfer phases in a wireless power system. The system includes a power transmitter and a power receiver. During the standby phase, the power transmitter operates in a low-power state to conserve energy while periodically monitoring for signals from the receiver. The power receiver, when requiring power, sends a wake-up message to the transmitter. Upon receiving this message, the transmitter transitions to the power transfer phase, where it actively transmits power to the receiver. This transition is triggered solely by the receiver's wake-up signal, ensuring efficient power delivery only when needed. The system may also include additional features such as authentication protocols to verify the receiver's identity before power transfer begins, ensuring security. The transmitter may adjust power levels based on the receiver's requirements, optimizing energy efficiency. The receiver may also include a controller to manage power reception and communication with the transmitter. This approach reduces unnecessary power consumption and improves synchronization between the transmitter and receiver, enhancing overall system efficiency.
22. The power receiver circuit of claim 21, wherein the standby power signal requirement is indicative of a power requirement of the power signal during the standby phase.
A power receiver circuit is designed to manage power delivery in electronic devices, particularly during standby phases where reduced power consumption is critical. The circuit includes a power receiver configured to receive a power signal from a power transmitter, and a controller that monitors and adjusts the power signal based on operational requirements. The controller determines a standby power signal requirement, which reflects the power needed during the standby phase to maintain essential functions while minimizing energy use. The circuit may also include a communication module to exchange data with the power transmitter, ensuring efficient power transfer and coordination. The controller dynamically adjusts the power signal to meet the standby power signal requirement, optimizing energy efficiency and device performance. This approach reduces unnecessary power consumption during standby, extending battery life and improving overall system efficiency. The circuit is particularly useful in wireless power systems where precise power management is essential.
23. The power receiver circuit of claim 21, wherein the standby power signal requirement represents a minimum power for a reduced functionality of the power receiver circuit.
A power receiver circuit is designed to receive and manage electrical power, particularly in systems where power delivery may be intermittent or variable. The circuit includes a standby power signal requirement, which defines the minimum power needed to maintain reduced functionality of the circuit when full power is not available. This ensures that essential operations can continue even under low-power conditions, preventing complete system shutdown. The circuit may also include a power management module that monitors power levels and adjusts functionality accordingly, ensuring efficient use of available power. Additionally, the circuit may incorporate a power storage component, such as a capacitor or battery, to store excess power for use during low-power periods. The standby power signal requirement is dynamically adjustable based on system demands, allowing the circuit to optimize power consumption while maintaining critical operations. This design is particularly useful in wireless power transfer systems, portable devices, and other applications where reliable power management is essential.
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November 18, 2020
December 6, 2022
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